import { ViewEngine } from './view-engine';

/**
 * 表格导航视图界面引擎
 *
 * @export
 * @class GridExpViewEngine
 * @extends {ViewEngine}
 */
export class GridExpViewEngine extends ViewEngine {
  /**
   * 表格导航栏部件
   *
   * @type {*}
   * @memberof GridExpViewEngine
   */
  public gridExpBar: any = null;

  /**
   * Creates an instance of GridExpViewEngine.
   *
   * @memberof GridExpViewEngine
   */
  constructor() {
    super();
  }

  /**
   * 初始化引擎
   *
   * @param {*} options
   * @memberof GridExpViewEngine
   */
  public init(options: any): void {
    this.gridExpBar = options.gridexpbar;
    super.init(options);
  }

  /**
   * 引擎加载
   *
   * @memberof GridExpViewEngine
   */
  public load(): void {
    super.load();
    if (this.getGridExpBar() && this.isLoadDefault) {
      const tag = this.getGridExpBar().name;
      this.setViewState2({ tag: tag, action: 'load', viewdata: this.view.viewparams });
    } else {
      this.isLoadDefault = true;
    }
  }

  /**
   * 部件事件机制
   *
   * @param {string} ctrlName
   * @param {string} eventName
   * @param {*} args
   * @memberof GridExpViewEngine
   */
  public onCtrlEvent(ctrlName: string, eventName: string, args: any): void {
    super.onCtrlEvent(ctrlName, eventName, args);
    if (Object.is(ctrlName, 'gridexpbar')) {
      this.gridExpBarEvent(eventName, args);
    }
  }

  /**
   * 表格导航事件
   *
   * @param {string} eventName
   * @param {*} args
   * @memberof GridExpViewEngine
   */
  public gridExpBarEvent(eventName: string, args: any): void {
    if (Object.is(eventName, 'load')) {
      this.emitViewEvent('viewload', args);
    }
    if (Object.is(eventName, 'selectionchange')) {
      this.emitViewEvent('viewdataschange', args);
    }
    if (Object.is(eventName, 'activated')) {
      this.emitViewEvent('viewdatasactivated', args);
    }
  }

  /**
   * 获取部件对象
   *
   * @returns {*}
   * @memberof GridExpViewEngine
   */
  public getGridExpBar(): any {
    return this.gridExpBar;
  }
}
